I realize the icewalker has been subject to investigation before (viewtopic.php?f=20&t=436&p=1314&hilit=icewalker#p1314), but I have a similar problem.
As a healing disc priest the icewalker enchant gives me 0 pt rating. I would believe the 12 crit should count for something.
(P.S. I think the tooltip on Gavel of the Fleshcrafter is somewhat wrong. It says "Increases attack power by 282 in Cat, Bear, Dire Bear, and Moonkin forms only" when mouse-over)
Edit: The tooltip is from wowhead.com, ill go spam them instead.